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Encapsulated C60 in carbon nanotubes


Pulsed laser vaporization of graphite in the presence of certain metallic catalysts produces both carbon nanotubes and C60 molecules1. In nanotube production, most of the C60 is removed, along with other residual contaminants, by purification and annealing. It has been suggested that C60 may be trapped inside a nanotube during this elaborate sequence, but this has not been detected.

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Figure 1: A single-walled carbon nanotube containing a row of closed carbon shells concentric with the tubule axis.
Figure 2: Cross-sectional image of a rope comprising hexagonally packed parallel single-walled carbon nanotubes.


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Smith, B., Monthioux, M. & Luzzi, D. Encapsulated C60 in carbon nanotubes. Nature 396, 323–324 (1998).

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